露天矿液压反铲台阶全高开采工作面参数优化
|
摘要
基于巴基斯坦塔尔一区块露天煤矿采用7m3液压反铲—60t自卸卡车的间断工艺及台阶高度为15m的技术要求,分析了反铲及卡车的线性参数和作业特点,总结了反铲作业多种方式的优缺点和台阶全高开采的作业循环过程,按照反铲采装的技术要点要求,借助CAD绘图软件采用图解法,通过对卡车图块的做辅助线、对齐、移动、标注的制图方法和步骤,使卡车图块与反铲挖掘卸载包络曲线图块组合成比例为1∶1000图形并标注出欲求的数值,求得了台阶全高开采工作面的各参数。求得的主要参数为:当反铲最大挖掘半径14. 158m、最大卸载半径13. 235m,卡车高3. 50m、车厢长6. 011m时,下分台阶最大高度为4. 742m;当台阶高度为15m时,上分台阶高度为10. 258m,采掘带最大宽度为19. 233m。各个参数能够满足生产要求,设备选型合理。
Based on Pakistan Thar Block I Open-pit Coal Field which used the required technique of 7 m3 hydraulic backhoe,60 t dump trucks discontinuous process and 15 m step height. We analyzed the linear parameters and operating features of hydraulic backhoe and trucks, concluded different operation methods of advantages and disadvantages of hydraulic backhoe and the operation cycle of full-dimension mining of steps. According to the requirement of technical points of backhoe mining and with the help of CAD drawing software graphic method,through the drawing methods and procedures of auxiliary lines,alignment,movement and marking of truck drawing blocks,we made the truck blocks and backhoe excavated envelop curve blocks in a ratio of 1 ∶ 1000,marked the desired value and obtained the parameters of the working face of full-dimension mining of steps. The main parameters are: when the maximum digging radius of backhoe is14. 158 m,the maximum unloading radius is 13. 235 m,the height of truck is 3. 50 m, and the length of carriage is6. 011 m,the maximum height of bottom step is 4. 742 m; when the height of the step is 15 m,the height of the upper substep is 10. 258 m,and the maximum width of the mining belt is 19. 233 m. Each parameter can meet the production requirements and equipment selection is reasonable.
Based on Pakistan Thar Block I Open-pit Coal Field which used the required technique of 7 m3 hydraulic backhoe,60 t dump trucks discontinuous process and 15 m step height. We analyzed the linear parameters and operating features of hydraulic backhoe and trucks, concluded different operation methods of advantages and disadvantages of hydraulic backhoe and the operation cycle of full-dimension mining of steps. According to the requirement of technical points of backhoe mining and with the help of CAD drawing software graphic method,through the drawing methods and procedures of auxiliary lines,alignment,movement and marking of truck drawing blocks,we made the truck blocks and backhoe excavated envelop curve blocks in a ratio of 1 ∶ 1000,marked the desired value and obtained the parameters of the working face of full-dimension mining of steps. The main parameters are: when the maximum digging radius of backhoe is14. 158 m,the maximum unloading radius is 13. 235 m,the height of truck is 3. 50 m, and the length of carriage is6. 011 m,the maximum height of bottom step is 4. 742 m; when the height of the step is 15 m,the height of the upper substep is 10. 258 m,and the maximum width of the mining belt is 19. 233 m. Each parameter can meet the production requirements and equipment selection is reasonable.
引文
[1]露天采矿手册(第二册)[M].北京:煤炭工业出版社,1986.
[2][美]E.P.普列德尔,G.B.克拉克,H.L.拉特曼,等.露天采矿学(上册)[M].北京:煤炭工业出版社,1981.
[3] GB/T 15663. 4—1995,煤矿科技术语[S].
[4]杨荣新.露天采矿学(下册)[M].徐州:中国矿业大学出版社,1990.
[5]刘果.平朔东露天煤矿工作面台阶高度的优化[J].露天采矿技术,2012(5):5.
[6]贾宗民,王永刚.论高台阶开采工艺中的几个问题[J].煤炭技术,2004(5):49.
[7]王家臣,韩萍,刘琦.台阶高度对深凹露天矿开采的影响[J].国外金属矿山,1997(2):25.
[8]钮景付,杨飞,周伟,等.哈尔乌素露天矿内排期间下部开拓运输系统优化[J].金属矿山,2014(7):21.
[9]范沁红,张洪,孙明奇,等.液压挖掘机工作机构尺寸变化对其作业性能的影响规律研究[J].机械工程学报,2017(4):155.
[10]吴云飞,张平宽,石广洋,等.胜利露天矿电铲装车方法探讨[J].露天采矿技术,2013(9):16.
[2][美]E.P.普列德尔,G.B.克拉克,H.L.拉特曼,等.露天采矿学(上册)[M].北京:煤炭工业出版社,1981.
[3] GB/T 15663. 4—1995,煤矿科技术语[S].
[4]杨荣新.露天采矿学(下册)[M].徐州:中国矿业大学出版社,1990.
[5]刘果.平朔东露天煤矿工作面台阶高度的优化[J].露天采矿技术,2012(5):5.
[6]贾宗民,王永刚.论高台阶开采工艺中的几个问题[J].煤炭技术,2004(5):49.
[7]王家臣,韩萍,刘琦.台阶高度对深凹露天矿开采的影响[J].国外金属矿山,1997(2):25.
[8]钮景付,杨飞,周伟,等.哈尔乌素露天矿内排期间下部开拓运输系统优化[J].金属矿山,2014(7):21.
[9]范沁红,张洪,孙明奇,等.液压挖掘机工作机构尺寸变化对其作业性能的影响规律研究[J].机械工程学报,2017(4):155.
[10]吴云飞,张平宽,石广洋,等.胜利露天矿电铲装车方法探讨[J].露天采矿技术,2013(9):16.